The document discusses the process of cell division through mitosis. It begins with how a single fertilized egg cell multiplies through repeated cell division to form a multicellular organism. It then explains the steps cells take to duplicate their DNA and divide, including DNA replication, chromosome formation, and the stages of mitosis - prophase, metaphase, anaphase, telophase and cytokinesis. The end result is two daughter cells that are identical clones of the original parent cell.

1. Biology is the only subject in which multiplication is the same thing as division … 2006-2007

2. Making New Cells Making New DNA 2006-2007

4. And now look at you… How did you get from there to here?

9. Organizing & packaging DNA nucleus cell DNA nucleus cell 4 chromosomes in this organism DNA in chromosomes in everyday “working” cell DNA in chromosomes in cell getting ready to divide DNA has been “wound up”

10. Chromosomes of Human Female 46 chromosomes 23 pairs

11. Chromosomes of Human Male 46 chromosomes 23 pairs

13. Watson and Crick

20. Copied & Paired Up Chromosomes

22. double-stranded human chromosomes ready for mitosis

23. DNA must be duplicated… nucleus cell DNA in chromosomes nucleus cell duplicated chromosomes chromosomes in cell 4 single-stranded chromosomes duplicated chromosomes 4 double-stranded chromosomes

31. Cell division in Animals

32. Mitosis in whitefish embryo

33. Mitosis in plant cell

34. onion root tip

35. Overview of mitosis Copy DNA Wind Up Meet in Middle Apart Divide

36. 2006-2007 Any Questions?? Any Questions??